Tuesday, December 21, 2021

Calculating the metal for first pour with new greensand

Determine metal needed from pattern

Pattern displaced 367g of water.  So volume is 367cc.

Aluminum weighs 2.7g per cc.

2.7 x 367g = 1015.2g

Determine how much metal the flask can accommodate

Flask diameter is 4"
Safe fill is about 3.5" with 1/2" below top

Flask volume is pi r squared x height.

pi x (2x2) x 3.5 =  43.96 ci

43.96 ci x 16.387 = 720 cc      

720 cc x 2.7 g/cc  =  1944g


Looks like I have a nice margin.

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